反应详情

(2-Chloro-5-nitropyrimidin-4-yl)cyclopentylamine (6.18 mmol, 1.5 g.) and trans-4-aminocyclohexan-1-ol (7.42 mmol, 854 mg mL) were mixed in DMF (18 mL) and N,N-diisopropylethylamine (7.42 mmol, 1.29 mL) was added. The reaction mixture was stirred overnight. Solvent was removed in vacuo and the residue purified using column chromatography (SiO2, 1:1 n-hexanes/ethyl acetate→7:3 n-hexanes/ethyl acetate→ethyl acetate) to give the desired product (1.75 g, 88% yield). ES-MS: 322 (M+1). When the hydrochloride salt of an amine is used in place of the trans-4-aminocyclohexan-1-ol described above, 2 to 3 equivalents of N,N-diisopropylethylamine or sodium bicarbonate and tetrahydrofuran or acetonitrile were used as solvent.

1. customSolvent was removed in vacuo
2. customthe residue purified